Hemophilia is caused by an X-linked recessive gene. A normal woman whose father had hemophilia marries a normal
man. What are the chances of hemophilia in their children? What will be an ideal response?
ANSWER: All females normal but 1/2 of them would be carriers; 1/2 of the males would have
hemophilia, the other 1/2 normal.
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Which of the following contain both chlorophyll a and chlorophyll b?
A. Green sulfur bacteria B. Cyanobacteria C. Purple sulfur bacteria D. Prochloron
Cephalization is the evolutionary tendency toward the concentration of sense organs at one end of the body of bilateral animals
Indicate whether the statement is true or false
Antibiotics that contain a beta-lactam ring
A) bind to and cross-link peptidoglycans B) act as an antimetabolite C) bind to a bacterial RNA polymerase D) are erroneously incorporated as nucleic acids
Some internally fertilized eggs develop and hatch outside the mother's body. What is this developmental strategy called?
A. Marsupial development B. Placental development C. Vivipary D. Oviparity